.body{
    font-size: 12px Arial,Helvetica,sans-serif;
}

/* 清除元素浮动，解决float高度塌陷问题 */
.clear_fix::after{
    content: "";
    display: block;
    clear: both;

    height: 0;
    visibility: hidden;
}

/* 共用的宽度 */
.wrapper_01{
    width: 1100px;
    margin: 0 auto;
}

.wrapper_02{
    width: 980px;
    margin: 0 auto;
}

.wrapper_03{
    width: 982px;
    margin: 0 auto;
}

.topbar_sprite{
    display: inline-block;
    background: url(../../images/topbar_sprite.png);
}

.topbar_icon_hot{
    width: 28px;
    height: 19px;
    background-position: -190px 0;
}